Detachable plowshare.



H. A. SCHULZE & C. R. WREN. DETACHABLE PLOWSHARE.

APPLICATION FILED FEB. I, I915. 1,173,985.

Patented Feb. 29, 1916.

\\ ITXESSES:

I UNITED STATES PATENT OFFICE.

HERBERT A. SCHULZE AND CARL RI WREN, OF DIXON, CALIFORNIA.

DETAQHABLE PLOWSHABE.

a simple, substantial, cheaply manufactured,

quick detachable'plow share which may be section on line 33, Fig. 1.

removed or attached without the use of bolts, nuts or tools of any kind.

Further objects will hereinafter appear.

The invention consists of the parts and the construction and combination of parts as hereinafter more fully described and claimed, having reference to the accompanying drawings, in which Figure l isan elevation taken from the under side of the plow. Fig. 2 is a side elevation of the plow share. Fig. 3 is a Fig. 4 is a horizontal section on line 1-4, Fig. 1.

A indicates the frog of a plow which is adapted to be secured to the lower end of the plow beam (not here shown) in the usual manner, 2 the mold board carried by the frog and 3 the detachable share. The lower forward end of the frog is in this instance considerably extended, as shown at l, to form a substantial backing or support for the share.

The frog is of angular section having a straight side to which the landside is secured and a rearwardly and laterally extending plate to which the share is attached. Adjacent the forward end of the landside of the frog.is provided an inclined slot or cut-out 5, while the laterally extending plate of the frog is also formed with a slot 6 opening through the bottom edge thereof, as depicted in Fig. 1. Secured on the back of the share 3 is a bolt or lug 8 adaptedto project through the slot 6, and extending inwardly from the landslde of the share is a lug 7 angularly related to lug 8 and adapted to engage in the cut-out 5.

Formed on the outer end of bolt 8 is a grooved head 9 which is adapted to receive one end of a spring link 10; the other end of said link being secured to a lever 11 which is pivotally mounted, as at 12, on a Specification of Letters Patent.

I slots.

.' Patented Feb. 29, 1916.

' Application filed February 1, 1915. Serial No. 5,444.

"bracket ,13 bolted or otherwise secured on the back of the mold board. The link is preferably dropped into a. slot 14 formed on the lever and is prevented from jumping out or becoming accidentally removed by bolting a plate or like device over the open end of the 'slot. This construction alsofpermits. the link as a whole to be removed or detached from the lever in case of breakage, thus doing away with the possible purchase ofv a whole new lever and link if either should break. The lever is in this instance self-locking, as thelink attaching point is below the pivot point 12, thus holding the lever in locked position against the mold board without the necessity of using any other securing means.

In operation, when it is desired to remove the share, it is only necessary to throw or swing the; lever about its pivot to the dotted hne positlon shown. This relieves the ten sion on the spring link and at the same time throws it down to a point where the lower end of the link may be disengaged from the grooved head 9. The share. is in this manner released and is completely removed by pulling it in an outward direction until bolts 7 and 8 are freed from their respective slots. In replacing the share, it is only necessary to place it in a position where bolts 7 and 8 register with their respective I The share is then forced or pushed up until the bolts reach and engage-the rear end walls of the slots as'shown-in Figs. 1 and 1." The lower end of the linkis then swung into engagement with the grooved head 9 and the lever thrown back, thus placing the link under tension and securing the share in position. The spring linkinsures tension at all times, and the slots 5 and 6 cut in the frog insure perfect alinement of the share and mold board.

The device as a whole is simple and substantial in construction and permits the share to be quickly removed or attached at and that we do not Wish to limit ourselves to the specific design and construction here shown.

Having thus described our invention, what we claim and desire to secure by Letters Patent is- 1. In a plow, a mold board, a frog secured thereto and provided in its landside with a slot closed at each end and in its laterally extending plate with a slot opening through the bottom edge thereof, a share of angular section detachably supported by the frog and provided with angularly related lugs adapted to engage in the slots of the frog, the lug which engages in the slot of the laterally extending frog plate being formed with an enlarged peripherally grooved head between which and the share the frog slidably engages, a bracket secured on the mold board, a lever pivoted to the bracket and provided with a slot extending in the direction of movement of the lever, and a Wire spring link having one end slidably engaged in the slot of the lever and the opposite end adapted to receive the head of said lug and engage in the peripheral groove thereof.

2. In a plow, a mold board, a frog secured thereto and provided in its landside with a slot closed at each end and in its laterally extending plate with a slot opening through the bottom edge thereof, a share of angular section detachably supported by the frog and provided with angularly related lugs adapted to engage in the slots of the frog, the lug which engages in the slot of the laterally extending frog plate being formed with an enlarged headbetween which and the share the frog slidably engages, a lever pivoted to the share and provided with a slot extending transversely to the axis of the lever pivot, and a link detachably engaging with the head of the specified lug to secure the share in position and slidably mounted in the slot of the lever to move therein beyond dead center when the link is engaged with the lug.

In testimony whereof we have hereunto set our hands in the presence of two subscribing witnesses.

HERBERT A. SCHULZE. CARL R. \VREN.

lVitnesses A. A. COLLIER, WILL S. CLUFF.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

